WFO Monthly/Daily Climate Data
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CXUS56 KTFX 121205
CF6HLN
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   HELENA MT
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   46 35 N
                                          LONGITUDE: 112  0 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  47  26  37  12  28   0 0.00  0.0    0  3.8 16 290   M    M   6        18 280
 2  42  22  32   7  33   0 0.00  0.0    0  2.2  7 260   M    M   4         9  20
 3  39  27  33   8  32   0 0.18  1.9    0  7.6 21 330   M    M  10 1      26 340
 4  31  22  27   3  38   0 0.01  0.2    2  9.4 28 260   M    M   8 1      32 260
 5  34  21  28   4  37   0 0.00  0.0    1 10.4 24 260   M    M   1        32 250
 6  30  10  20  -4  45   0 0.00  0.0    1  2.1  9  80   M    M   3        10  80
 7  34  14  24   1  41   0 0.00  0.0    1  1.1  6 280   M    M   2         6 230
 8  34  12  23   0  42   0 0.00  0.0    1  2.3  8 240   M    M   0 18      8 240
 9  35  11  23   1  42   0 0.00  0.0    1  2.1  7 260   M    M   2 128     7 240
10  33  12  23   1  42   0 0.00  0.0    1  2.8 20  50   M    M   0 18     23  50
11  32  13  23   1  42   0 0.00  0.0    1  1.1  8 340   M    M   0 1       9 340
================================================================================
SM  391  190       422   0  0.19     2.1  44.9          M       36
================================================================================
AV 35.6 17.3                               4.1 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->  # 28 260               # 32  260
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  HELENA MT
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   46 35 N
                                          LONGITUDE: 112  0 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 26.4   TOTAL FOR MONTH:   0.19    1 = FOG OR MIST
DPTR FM NORMAL:   2.9   DPTR FM NORMAL:    0.03    2 = FOG REDUCING VISIBILITY
HIGHEST:    47 ON  1    GRTST 24HR  0.18 ON  3- 3      TO 1/4 MILE OR LESS
LOWEST:     10 ON  6                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   2.1 INCHES  5 = HAIL
                        GRTST 24HR   1.9 ON  3- 3  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   2 ON  4     7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   3    0.01 INCH OR MORE:   2
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   1
MIN 32 OR BELOW:  11    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   422    CLEAR  (SCALE 0-3)   6
DPTR FM NORMAL   -34    PTCLDY (SCALE 4-7)   4
TOTAL FM JUL 1  2303    CLOUDY (SCALE 8-10)  1
DPTR FM NORMAL   -35

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   702    HIGHEST SLP M ON M
DPTR FM NORMAL   296    LOWEST  SLP 29.62 ON  3

[REMARKS]



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